From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Instructions for rebuilding a Phantom III gearbox following a failure on the dynamometer.
| Identifier | ExFiles\Box 94\2\ scan0060 | |
| Date | 12th November 1936 | |
| 328 HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Rm{William Robotham - Chief Engineer}/Gry{Shadwell Grylls}5/R.12.11.36. P.III GEARBOX - 4 HS.{Lord Ernest Hives - Chair} This box has failed on dynamometer owing to a fraction of the retaining thread at the rear of the 2nd motion shaft. Will you please rebuild the box to in-corporate:- (1) A new production 2nd motion shaft. (2) New roller bearing at rear of this shaft MRJ.25 supplied to the fitting shop. (3) New 1st speed gears of the RR type necessitating also a new splined sleeve. (4) The 3rd speed loose pinion bush to have .003 clearance inside and out, i.e., a total of .006 and also .006 end clearance to test the 'concertina' coupling under extreme conditions. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||